[Sbs] [New Logentry] RC Update -- Tuesday 06/03/25 [Meeting at 1:00pm]

[pdbforce at jlab.org]

Logentry Text:
--
<h2>Accelerator and Hall Status</h2>
<ul>
  <li>Most productive day in my RC tenure so far! We raised beam current up to <b>22 uA</b> collecting <b>1.47 C</b> on LH2. </li>
  <li>Around noon, a couple of hours after raising the beam current, there was an issue with low 15K flow to the hall. It forced us to reduce the beam current back to 18uA temporarily. But the experts are continuously working to fix the issue making sure no impact in data taking. </a></li>
  <li>Early swing shift, CH disks filled up due to the increased data rate forcing us to reduce the beam current to 10uA temporarily. Alex resolved it by increasing the frequency of file transfer to MSS (<a href="https://logbooks.jlab.org/entry/4389104">https://logbooks.jlab.org/entry/4389104</a>). Ole was on shift and later he noticed that computer center was not being able to keep up with the transfer. So, he made a temporary update to the MSS file transfer script enforcing asynchronous duplication of the files at tape (<a href="https://logbooks.jlab.org/entry/4389298">https://logbooks.jlab.org/entry/4389298</a>). </li>
  <li>Mid-swing shift SL (Dulitha Jayakodige) noticed missing ECAL VTP channels in a 5k and notified the DAQ experts. Ben identified the issue quickly and provided instructions to resolve it. I have added these instructions to "Fixing the DAQ" section. On Wednesday, Ben will update the readout list to send an error message to the RC GUI with these instructions. <a href="https://logbooks.jlab.org/entry/4389163">https://logbooks.jlab.org/entry/4389163</a></li>
  <li>Adam Schoene at MCC added a flag to the SBS magnet GUI to indicate the status of the GEM HVs. This flag instructs operators to contact Hall A CH before ramping the SBS magnet up or down if the GEM HVs are ON, in order to avoid unexpected GEM HV trips. Many thanks to Adam and Doug for their help with this. <a href="https://logbooks.jlab.org/entry/4389243">https://logbooks.jlab.org/entry/4389243</a></li>
  <li><span style="color: red;">Tomorrow is maintenance day.</span> Beam will be taken away at 6:45 am. RadCon (and techs) will be here at 7:15 am and take the hall to controlled access as soon as possible. Please inform me if you plan to make an access.</li>
</ul>

<h2>Links to Shift Summaries</h2>
<ul>
  <li>Day Shift (Monday) --- <a href="https://logbooks.jlab.org/entry/4388782">https://logbooks.jlab.org/entry/4388782</a></li>
  <li>Swing Shift (Monday) ---  <a href="https://logbooks.jlab.org/entry/4389090">https://logbooks.jlab.org/entry/4389090</a> </li>
  <li>Owl Shift (Tuesday) --- <a href="https://logbooks.jlab.org/entry/4389345">https://logbooks.jlab.org/entry/4389345</a> </li>
</ul>

<h2>Sources of Major Downtime in the Hall</h2>
<table>
  <tr>
    <th>Source</th>
    <th>In the Last 24 hrs</th>
    <th>Since Wednesday May 28 Swing</th>
  </tr>
  <tr>
    <td>DAQ</td>
    <td>4 hrs</td>
    <td>27.4 hrs</td>
  </tr>
  <tr>
    <td>ECAL AC</td>
    <td>0.5 hr</td>
    <td>1.5 hrs</td>
  </tr>
</table>

<h2>Accumulated Charge on LH2</h2>
<ul>
   <li>Total Accumulated Charge at Kin3 so far: <b>14.28 C</b> (Goal: 100 C)</li>
   <li>Total Accumulated Charge at Kin3 since Wednesday May 28 Swing: <b>6.53 C</b> </li>
</ul>

<h2>Run Plan for Today</h2>
<ul>
  <li>Continue taking production data @ <b><span style="color: red;">22.5 uA</span></b></li>
</ul>

<p><b>Let's meet today at the usual time (1:00 pm) to go over recent and future activities.</b><br>
Meeting details:<br>
Time: Daily at 1:00pm<br>
Location: Counting house conference room<br>
Join ZoomGov Meeting<br>
<a href="https://jlab-org.zoomgov.com/j/1616220064">https://jlab-org.zoomgov.com/j/1616220064</a><br>
Meeting ID: 161 622 0064<br>
Passcode: 314159<br>
</p>


---

This is a plain text email for clients that cannot display HTML.  The full logentry can be found online at https://logbooks.jlab.org/entry/4389621
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/sbs/attachments/20250603/fbe03368/attachment.htm>